1592953472000 1312632483000 term-52936 1616541353987 1312632547000 1616290223189 adlib fitz-online adlib-term-52936 9715fcad-0b99-34a8-9b23-7974a052f33e 2 1 scope note The central wedge-shaped voussoirs in arches or vaults; also, similar elements used as ornaments on the heads of doors or windows. JJIGA reference term-49386 adlib-term-49386 7e00a556-87d8-3889-bc59-79adbf674336 keystone V.PJ.AFU.ALO.ARI.AFU.ALO.AFU.BCW.AFU 1 code V.PJ.AFU.ALO.ARI.AFU.ALO.AFU.BCW.AFU 1 keystones reference term-50660 adlib-term-50660 3f28859e-f944-3106-ac5e-633efa1007c4 voussoirs keystones term